Node.js / Axios won't connect to localhost

Question

I have a cryptocurrency (Nano) node running locally on my computer. It has an RPC API and I've tested that I can successfully make calls to it using curl. E.g.

curl -d '{ "action": "account_balance", "account": "xrb_1aaprwcu9fac1tw3wesud5txb1zuiroti5xfr19bwozitjnnmbcbwpr1w95f" }' localhost:7076

However I'm trying to do the same thing in a node script and keep getting ECONNREFUSED

Here's my node script (the important parts).

const axios = require('axios')
const config = require('./config')

const rpc = axios.create({
  baseURL: 'localhost:7076', // I've also tried 'http://localhost:7076'
  // I've tried with and without proxy settings, I don't understand proxies very well though
  /*proxy: {
    host: '127.0.0.1',
    port: 7077
  }*/
})

function createAddress(accountIndex) {
  // Ensure accountIndex is a string
  accountIndex = accountIndex + ''
  // Get a new private key
  return rpc.post('/', {
    action: 'deterministic_key',
    index: accountIndex,
    seed: config.walletSeed
  })
    // Add to the local wallet
    .then(function(result){
      return rpc.post('/', {
        action: 'wallet_add',
        key: result.private,
        wallet: config.walletId
      })
    })
    // Return the account address
    .then(function(result){
      return result.account
    })
    .catch(function(err) {
      console.log('Error', err)
    })
}

createAddress(52).then(function(address){
  console.log(address)
})

And here's the error.

Error { Error: connect ECONNREFUSED 127.0.0.1:7076
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1170:14)
  errno: 'ECONNREFUSED',
  code: 'ECONNREFUSED',
  syscall: 'connect',
  address: '127.0.0.1',
  port: 7076,
  config:
   { adapter: [Function: httpAdapter],
     transformRequest: { '0': [Function: transformRequest] },
     transformResponse: { '0': [Function: transformResponse] },
     timeout: 0,
     xsrfCookieName: 'XSRF-TOKEN',
     xsrfHeaderName: 'X-XSRF-TOKEN',
     maxContentLength: -1,
     validateStatus: [Function: validateStatus],
     headers:
      { Accept: 'application/json, text/plain, */*',
        'Content-Type': 'application/json;charset=utf-8',
        'User-Agent': 'axios/0.18.0',
        'Content-Length': 117 },
     method: 'post',
     baseURL: 'http://localhost:7076',
     url: 'http://localhost:7076/',
     data: '{"action":"deterministic_key","index":"52","seed":"***"}' },
  request:
   Writable {
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        finalCalled: false,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        destroyed: false,
        decodeStrings: true,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function: bound onwrite],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     _events:
      { response: [Function: handleResponse],
        error: [Function: handleRequestError] },
     _eventsCount: 2,
     _maxListeners: undefined,
     _options:
      { protocol: 'http:',
        maxRedirects: 21,
        maxBodyLength: 10485760,
        path: '/',
        method: 'post',
        headers: [Object],
        agent: undefined,
        auth: undefined,
        hostname: 'localhost',
        port: '7076',
        nativeProtocols: [Object],
        pathname: '/' },
     _redirectCount: 0,
     _requestBodyLength: 117,
     _requestBodyBuffers: [ [Object] ],
     _onNativeResponse: [Function],
     _currentRequest:
      ClientRequest {
        _events: [Object],
        _eventsCount: 6,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: true,
        upgrading: false,
        chunkedEncoding: false,
        shouldKeepAlive: false,
        useChunkedEncodingByDefault: true,
        sendDate: false,
        _removedConnection: false,
        _removedContLen: false,
        _removedTE: false,
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: true,
        socket: [Socket],
        connection: [Socket],
        _header: 'POST / HTTP/1.1\r\nAccept: application/json, text/plain, */*\r\nContent-Type: application/json;charset=utf-8\r\nUser-Agent: axios/0.18.0\r\nContent-Length: 117\r\nHost: localhost:7076\r\nConnection: close\r\n\r\n',
        _onPendingData: [Function: noopPendingOutput],
        agent: [Agent],
        socketPath: undefined,
        timeout: undefined,
        method: 'POST',
        path: '/',
        _ended: false,
        res: null,
        aborted: undefined,
        timeoutCb: null,
        upgradeOrConnect: false,
        parser: null,
        maxHeadersCount: null,
        _redirectable: [Circular],
        [Symbol(isCorked)]: false,
        [Symbol(outHeadersKey)]: [Object] },
     _currentUrl: 'http://localhost:7076/' },
  response: undefined }

I feel like I've tried countless variations of configuration. What am I not getting?

Answer 1

This is 4 months later but I've been trying to figure out the same thing.

Try changing your instance configuration like this:

  const rpc = axios.create({
    baseURL: 'localhost:7076', 
    proxy: false  
})

I couldn't find the solution so I ended up digging through axios' code.

I found this on line 89 of /lib/adapters/http.js:

var proxy = config.proxy;
if (!proxy && proxy !== false) {
  var proxyEnv = protocol.slice(0, -1) + '_proxy';
  var proxyUrl = process.env[proxyEnv] || process.env[proxyEnv.toUpperCase()];
  if (proxyUrl) {
    var parsedProxyUrl = url.parse(proxyUrl);
    proxy = {
      host: parsedProxyUrl.hostname,
      port: parsedProxyUrl.port
    };

    if (parsedProxyUrl.auth) {
      var proxyUrlAuth = parsedProxyUrl.auth.split(':');
      proxy.auth = {
        username: proxyUrlAuth[0],
        password: proxyUrlAuth[1]
      };
    }
  }
}

if (proxy) {
  options.hostname = proxy.host;
  options.host = proxy.host;
  options.headers.host = parsed.hostname + (parsed.port ? ':' + parsed.port : '');
  options.port = proxy.port;
  options.path = protocol + '//' + parsed.hostname + (parsed.port ? ':' + parsed.port : '') + options.path;...

The way I read it, if there is no proxy entry in your config or if your proxy entry is not false (the boolean). Then it makes the var 'proxy' equal to it's default proxy. So when it gets down to line 110...

if (proxy) {...

...there is a proxy, (the default it just created) and it will use it.

When I added proxy: false to my config axios worked as I expected.